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Show HN: Find the cheapest protein per gram across 3000 powders

5 BatuhanU 1 9/6/2025, 6:48:25 PM priceperprotein.com ↗
I tracked protein powder prices in a spreadsheet for years and found that identical protein content can have wild price differences.

I built PricePerProtein to automate it. It pulls real-time Amazon data (Keepa API) and uses Gemini 2.5 Flash to extract nutrition facts from product images/descriptions. Calculates actual protein per dollar, not just package price.

Technical: FastAPI + Celery backend, Next.js frontend with virtual scrolling to handle 3000+ products. Deployed on a VPS (migrated from GCP - much simpler). The AI handles everything from blurry nutrition labels to understanding flavor categories.

No signup, no ads, no affiliate links. Updates hourly.

Comments (1)

BatuhanU · 4h ago
Oh, also: The dataset is exposed via a remote MCP server: https://mcp.priceperprotein.com

You can connect to it using any MCP client (such as Claude). Then ask in natural language, e.g. “What’s the cheapest unflavored whey powder right now with 4+ stars?”, and the client will hit the MCP tool with those filters and give you back the results.